Ztek billet Z logo valve stem caps. CNC turned and then engraved with the Z32 style Z logo and given a polished finish on the face. They have pre-installed o-rings in them to ensure a proper seal. $25 shipped for the set of 4 in either the smooth or knurled body style or 2 sets for $40. Email me for details/questions at jz90na@yahoo.com I can also take paypal to the same email. Thanks!